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Article #268Re: Two phases to house - loss of neutral
From: Phil Allison
Date: Tue, 24 Nov 2009 02:40
Date: Tue, 24 Nov 2009 02:40
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"kreed" > From what I can gather, pretty much every home in the US has a 120v - > 0 - 120v system where the 2x 120v's are 180 degrees out of phase. > Between the 2 phases 240v is available for stoves, air conditioners > etc. > > In Australia, most separate homes have a straight single phase 240v > supply, its not common for there to be 2,3 separate phases to the > average house. Therefore the scenario Sylvia mentions is less likely > to occur, as not many people have this multi phase system. > > The exception here could be blocks of flats, if the main neutral to > the building fails, and there isn't a good earth, the imbalance could > be a risk. ** There is always a good "earth" available - courtesy of the water mains in the street being linked to neutral at every premises. ..... Phil
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